Woder 24-Sur Survival Water Filter Bottle w High Performance Ionic Filtration System - 100Gal Cartridge Capacity - Made in USA - 24oz. BPA Free - Tested to EPA Protocol for Microbiological Purifiers High Capacity Water Filter - Drop-In Survival Water Filter (IONIC Adsorption Micron Filtration system) with 100 gal / 575 refills capacity when using municipal water only, or 25 gal / 145 refills capacity when filters contaminants in water from most common outdoor water source, including lakes, streams, rivers, wells or ponds. High Performance Survival Filter - Water Filter removes 99.99% Toxic chemicals, Heavy Metals, Unpleasant Tastes & Odors and Microbiological Threats. Filter removes Volatile Organic Compounds (VOC's), PCBs, trihalomethanes, synthetic organic compounds (SOC's), detergents, pesticides, DDT, asbestos, aluminum, cadmium, chromium, copper, lead and mercury, as well as radiologicals such as Radon 222, E-Coli, Giardia and Cryptosporidium. Approved Filtration System - The Survival formula is tested to the EPA Protocol for Microbiological Purifiers by the University of Arizona and by Spectrum Labs in accordance with ANSI/NSF Protocol for Standard 42 and 53 Class I adapted for sport bottles. Easy to use and Multi-purpose - Works great for outdoor activities and emergencies, and also for everyday use at Home, School, Work, while exercising or Sporting Events. (Home, office, School, Exercising, Boating, Camping, Hiking, Hunting, Fishing, Missions, Sporting Events, Cycling, Continental or Inter-Continental Travel and Emergency Preparation). Please note: Due to customer request, brand might not be visible on bottle. Saves money and green - Save you $500 or more on bottled water. Leaving in beneficial minerals like calcium, magnesium, and potassium. Please note: Do not use with saltwater. Large 24-oz. bottle Keeps you safe when you travel or in the outdoors Fits conveniently in your purse, briefcase, or backpack Tested to EPA protocols for microbiological purifiers Free of BPA and other estrogenic compounds Made in the USA Do not use with saltwater. If viruses are known to be present...use two drops of hydrogen peroxide, bleach or iodine tablets and shake. Wait 20 minutes before use. The Survival filter will remove the hydrogen peroxide, bleach or iodine.